Jolla behaviour if Connection Problem [not relevant]
Today I was out for shopping and I assume that some shops I visited used 3G scramblers leading to heavy connection problems. I had similar issues with Android cellphones at the same places, so far, so good.
Regarding the behaviour of Jolla, now I wonder, whether I found a bug or a feature.
Actually, what the Jolla seems to do in such situation, is silently notifying a connection problem and then completely switching off the mobile network.
This is good on one hand, as this way it doesn't burn battery by needlessly trying to reconnect all the time. On the other hand, it turns off the mobile network completely in the settings and hence will even not reconnect after leaving the concerned places.
In my opinion mobile network should remain active and try to reconnect in a defined frequency to save energy but not completely lose connection.